- go overboard
- go overboard1. Fig. to fall out of a boat or off of a ship; to fall overboard. •
Be careful or you will go overboard.
•Someone went overboard in the fog.
2. Fig. to do too much; to be extravagant. •Look, Sally, let's have a nice party, but don't go overboard. It doesn't need to be fancy.
•Okay, you can buy a big comfortable car, but don't go overboard on price.
Dictionary of American idioms. 2013.